Simmons say Havana has long relied on short wave radio to send encoded messages using a system that converts letters into numbers.

VOA: standard.2009.06.06

If the number is higher than Wall Street expects, then a wave of optimism could send markets higher.

FORBES: The Week Ahead for Your Money

Solar storms are violent eruptions on the sun that send a wave of charged particles, called plasma, into space at the speed of more than one million miles per hour.

MSN: Solar storms sparked by giant 'magnetic rope,' study finds

Some market observers say it is unlikely the Netherlands will impose losses on senior bondholders, because that could send a shock wave through the European banking sector.

WSJ: SNS Reaal Is in Talks to Avoid Bailout